Description

Find position (in grapheme units) of last occurrence of a case-insensitive string

Parameters

haystack

The string to look in. Must be valid UTF-8.

needle

The string to look for. Must be valid UTF-8.

offset

The optional $offset parameter allows you to specify where in $haystack to
start searching as an offset in grapheme units (not bytes or characters).
The position returned is still relative to the beginning of haystack
regardless of the value of $offset.

Return Values

Returns the position as an integer. If needle is not found, grapheme_strripos() will return boolean FALSE.